Another overflow question ??

Just2Bad · #1 10-21-2002, 04:10 PM

1- How much flow can I andle trough my overflow that is 1,38" ??

2- If I make a durso stand pipe should it be 1,38" like my overflow or a little bit bigger ??

3- If my return pump is a mag12 will I loose to much flow if I devide my return in 2 ??

Thanks...

Just2Bad · #2 10-24-2002, 02:03 AM

Just wanna thank you all for helping a new reefer with is plumbing dilemma.... Hope I haven't waisted to much of your precious time..

With all your supposed knowledge this should be an easy question... no ??? Or maybe because I'm not from the westcoast it's not worthing it...

I've posted 2 times in 2 weeks and 50 viewing each time and no answer!!!

cya..

eposer · #3 10-24-2002, 02:24 AM

You should be able to handle about 1000 gallons per hour or so no problem. Go the same size as the bulkhead as you won't get any added flow without a bigger bulkhead as well. Allow a couple inches above your stand pipe that way if the return is a little too much the water can rise a little above the top of the stand pipe(creating some extra pressure and increasing the flow to match the return). don't glue your standpipe, play with it a bit and see what works. :?

I think maybe the pipe size confused some people. :?:

1" will do about 800 gallons per hour.

1.5" will do about 1600 gallons per hour.

later,
evil westerner :twisted:

AJ_77 · #4 10-24-2002, 02:50 AM

Wow, I think your other posts got pretty decent responses, esp. the overflow question. You really shouldn't get so hot and bothered by the lulls here sometimes, it's not a 1500-member board remember.

It's just too bad you couldn't hang on a little while longer for an answer.

OH, look- you got one!

Perhaps the way you display measurements threw people off?? I would have guessed that 1,38" would "probably" mean 1 3/8" but perhaps not everyone... Just a hunch.

Cheers, chill,

Aj

StirCrazy · #5 10-24-2002, 03:09 AM

I will respond in a bit.. have to put my daughter to bed first

Stay tuned :shock:

Steve

pocilipora · #6 10-24-2002, 03:39 AM

Relax

EmilyB · #7 10-24-2002, 04:41 AM

I was going to guess 1 3/8th but not wanting to look like the total DIY idiot I am.....I just wondered if he read the Durso instructions, cuz it said to increase to 1.5 if you were smaller.....

I figured 1,38 meant something diy significant....
:P

8)

StirCrazy · #8 10-24-2002, 05:11 AM

ok chalk me up as another that recomends at least a 1.5" pipe for a overflow on a mad drive 12.. I run two 1.5" overflows and if I close one off the other will just barly handle the flow. so you might get away with a 1 and 3/8" (if thats what you ment) but you will be very close to capacity depending on how you did your piping.. also remember durso's and the other one flow a lower amount that a open pipe also.

Steve

Just2Bad · #9 10-24-2002, 01:41 PM

1,38" should be 1 1/4 sch40. I told you 1,38" cause it's what the guy on the phone form the plastics shop told me. But now that I passed by the plastic shop I know that it's 1 1/4". I've never done plumbing before so I'm a really newbe at this.

If my return pump is a mag12 will I loose to much flow if I devide my return in 2 or maybe 3??

Doug · #10 10-24-2002, 02:00 PM

Sorry to not answer your post.

I have been a little busy with my mothers funeral.

As Steve said, 1 1/2in. is a good size. That would allow an 1 1/4in. Durso. A 1in. Durso on a tank I have, can handle my Iwaki 20, about 500gph. A pair of 1 1/4 overflows can easily handle a 1000 gph.

A Mag 12, split into two, will not have much current. But it depends on tank size and occupants.